Multipolar electromagnet.



' vation thereof,'and. Figs. 3 and 4 are eleva Y UNITED STATES PATENT OFFICE.

HERMANN G. PAPE, or NEW YORK, Y. MULTIP LAR ELECTROMAGNET.

No. 812,445. a

ject and others subordinatethereto, the in.-' vention consists 1n connectlng a plurality of ma netlc cores 1n series and surrounding sai cores 'Withsleeves connected; in series and in inter osing between eachsleeve and core a coil 0 wire through which a current of hi h voltage but low. ampera e may be passe to powerfully energize the device thus produced.

Inth'e accom anyin draw1ngs,'Figure 1 is an elevation o my e ectromagnetic device and its armature 2 is a sectional eletions ofthe opposite ends ofv the structure.

Like numerals designate .cenespondi'ng parts in the several views. N 1 and 2 indicate a pair of cores'of soft iron or othersuitable material connected by a ter minal-cross-bar or' keeper 3, secured to the ends of the cores by smtablescrews The cores 1 and.2 arewound with wire, the wire,

coils 5 and 6 bein surrounded by soft iron or steel sleeves 7 and 8, which not onl protect the Wire, but serve as magnetic po es. The sleeves or shells 7 and 8 terminate at one.end in the plane of the adjacent ends of the cores 1 and 2-, but the o posite connected ends of said cores extend eyond the adjacent ends of the sleeves, so that the latter will be se arated from the cross-bar 3 b a consider'a le interval. The sleeves, like t e cores, are terminally connected, is by-a keeper or connector, in the form of a late 9, rovided with o enings 10, into whic the a jacent ends of t e sleeves or shells are fitted and rigidly secured by set-screws 11.

In order to permit the elements of the'de-..

vice to be assembled in a rigid organization with the parts-bearing the proper relation to each other, thepole-connectors 3 and 9 are connected'midway of their ends by a bolt 12 1 Specification of Letters Patent. Application and Kay 17, 1904. Serial Nozo aaea.

Patentedleb. 13, 1906.

of non-magnetic materialas, for instance, brass.

The bolt 12'iascrewedinto a thread through a plain opening 14 inthe plate 9,

lock-nuts 15 and 16' reventing movement of the bolt relative .to t char 3 and similar nuts 17 and 18 being screwed against the opposite faces of the late 9 to prevent movement of the latter a ter the sleeves and cor'e's have been assembled in their proper relative positions; By preference, hard rubber or other suitable insulating-heads 19 and 20 are fitted and protectthe wire.

At the end of the device 0 posite the connectors 3 and 9 is located tl ie armature 21. In the drawings the armatiire is shown as a sin le piece or bar-of sof,t extended entire yacross the end of the structure. viously, however, a. 1 divided armature may be employed, or, if preferred, an armature composed of soft-iron ends and an intermeinto each of the sleeves or shells to'inclose diate connection may be utilized. It will now be apparent that the connected cores 1 and 2 constitute, in effect, a U-sha ed magnet, of which the cores constitute t e respective north and south oles. Similarly the sleeves and the connect1ng.-' late 9 constitute a U-shaped magnet having ollow oles, the

sleeve surrounding the north pole o the first named magnet constituting t e south pole of I the second magnet, the other sleeve similarly differing in polarity fromthe core surrounded b it. In other words, the device includes a p uralit of legs or branches, each comprising a plum ity o poles of unlike polarit the south pole of one magnet'being-paire with It will.

the north pole of another'magnet.

also be noted that each coil or core winding serves to energize two. dissimilar concentric" poles and that the electromagnetic-device 1 thus produced isof general U-shaped form and has each leg or branch thereof com osed of a pair of dissimilar poles associated w th an interposed wire coil and connected with those poles of the other'le or branohwhich are of I 1 oorrespondingiorm, ut of different polarity. Attention is, furthermore, directed to the fact i that by reason of the rigid connection of the durable,

of the device may be considered as separate magnets, whose poles are disposed for serial cooperation, it being immaterial, so far as the invention in itsbroader aspects is concerned,

whether these cooperating poles are actually connected in a mechanical "sense or not. Broadly,the essential feature is'that arrangement whereby a pluralityof magnets, each comprisin two members, whether connected or not, and magnetized by a coil or coils cOmmon to both members, are made to cooperate with other poles having a serial relation, so that while each magnet is in itself compoundthe several magnets'will have serial cooperatron.

I It will of course be understood that the several poles may be of soft iron or" the device may be polarized by constructing certain of the poles of steel or' by any other well known expedient. 7

- It is thought thatfrom the foregoing the construction of my electromagnetic device and the many advantages accruing there-- connectors from will be clearly apparent;.but while the present embodiment of the invention appears at this time to be referable, I desire to reserve the right to e ect such changes, modifications, and variations of the illustrated structure as may come fairly within the scope of the protection prayed.

What I claim is 1. An'electroma netic device, including a plurality of legs or ranches each comprisin a plurality of poles of unlike polarity, each 0 said poles having aramagnetic connection with a pole of anot er leg or branch.

2. An electromagnetic device, including a i ranches each comprising plurality of legs or a pair of oles of unlike'polarity and an exciting-coi each pole having paramagnetic connection with a pole of anotherfleg or branch of the device.

3. An electromagnetic device, including a iplurality of le s or branches each having a .pluralityof poles and an interposed coil,.-arid.

paramagnetic connectors each connecting, a pole of one'leg to a pole of another leg, 4

4. An electroma netic device, includinga luralityof legs or ranches each includin a plurality of poles of unlike polarity, an a plurality of paramagnetic connectors located at the same end of the device and each connecting a pole of one-leg to a pole of another 'leg or branch. l

5 An electroma netic device, including a plurality of le s or ranches each including a plurality of 1130 es, a plurality ofparama netic ocated at the same end of t e device and each connecting a pole of one le to a pole of another leg or branch, and a diamagnetic connection between the connectors.

6. An electroma netic device, including a plurality of legs or branches each including a shell, a core and an interposed coil,.the shells and cores being paramagnetic, a paramagnetic connection between the cores, and a similar connection between the shells.

7. .An electromagnetic device, including two ma nets of approximate horseshoe form, both po es or ends of both magnets being disposed in approximately the same direction, and one or more exciting-coils common to the adjacent legs of said magnets and extended betweenthe same.

8. An electromagnetic device, including a plurality of magnets all, of whose poles are spaced apart-throughout anddisposed in approximately the same direction, and one or more exciting-coils common to said Ina nets.

9. An el ctromagnetic device, inclu 'ng a plurality 0 separate and distinct magnets spaced from each other, but having all of their poles disposed in' approximately the same direction, and one or more exciting: coils common to the magnets and interposed at least in part between the same.

' 10. In an electroma netic device, a plural ityof magnets all of w ose poles are disposed in-approximately the same direction, and exciting-coils each of which is common to a plurality of magnets, each coil inclosing one pole and serving to excite another pole uninclosed thereby.

" 11. In anelectromagnetic device, a -plurality-of magnets allot whose poles extend in approximately the same direction, and exciting-coils common to said magnets, said coils encirycling the respective legs of one magnet and servin to excite another magnet1 the legs of whic are not inclosed by the 001 s.

12. A11 electromagnetic device, comprisa plurality of legs each including unlike in 'podes, unlike-poles of different legs being paramagnetically connected.

' 13-. An electromagnetic device comprising aplurality of legs eachincluding unlike poles and. a coil, unlike poles of different legs being param'agneticailyi connected.

14.;An electromagnetic device, comprisi'n 'a plurality. oflegs each having unlikep0 es and an interposed coil, and separated paramagnetic connectors connecting unlike poles of different legs.

'15. An electromagnetic device, comprisin a plurality of legs each including unlike p0 es and a coil, spaced paramagnetic con nectors rigidly connecting unlike poles of different legs, and diam'agnetic means uniting theconnectors. v

. 1-6. An electromagnetic device, comprising a paramagnetic plate having a plurality of openings, paramagnetic shells terminally secured therein, and concentric cores within the shells and extended beyond the connected ends thereof, a parama netic bar con-' necting the extended ends oft e cores, a diamagnetic bolt rigidly connecting the bar and plate, and coils 'wound upon the cores.

' 17. An electromagnetic device, including a plurality of magnets having their unlike p0 es paired, one or more exciting-coils common to said magnets, and an armature.

18. An electromagnetic device, including a pair of magnets spaced apart throu hout but having their unlike poles disposed in adj acent relation and extended in the same direction, exciting-coils common to both mag-v nets and mounted on the respective legs or poles of one'magnet, and an armature common to both magnets.

19. An electromagnetic device, comprisa plurality of le s each including unlike.

poles, unlike poles of different legs being paramagnetically connected, and an excitingcoil common to'the unlike oles of a leg.

20. An electromagnetic evice, including a plurality of magnets having their unlike poles paired, and one or more exeiting-coils common to said magnets and extended between the same.

21. An electromagnetic device, including HERMANN e. PAPE.

' Witnesses:

JOHN H. SIGGERS, SULLIVAN V. JoHNsoN. 

